A rapper by the name of Young Muhammad claims the Maybach Music Group boss lifted the idea from a song titled "Caprice Music."

Rick Rossis just as known for his ever-present “Maybach Music” tagline as he is for his own ad-libs, and now he’s facing a lawsuit over it. A rapper claims that Rozay stole the concept of the tag from a song the pair did together back in 2007.

We broke the story … Ishaq R. Muhammad — aka Young Muhammad — threatened to sue Da Boss back in September 2017, claiming Rick stole the catchphrase — frequently dropped on his songs — from Muhammad’s 2007 jam, “Caprice Music.”

According to new legal docs … YM says he featured Rick on his “Caprice Music” single and Ross could be heard saying the phrase all over the track. Muhammad claims that’s where Ross got the idea for “Maybach Music” … and he’s been using it ever since.